应用钻头与地层相互作用模型[1]，对钻头和地层的各向异性钻井特性进行了综合分析研究，给出了相应的等效表达式。在此基础上，本文提出了一种图形分析方法，从而可以在微机上以彩色图形直观显示钻头和地层各向异性对井斜变化和方位漂移的影响规律，便于钻井技术人员理解和使用。

在宏观上回顾了国内外旋转钻井科技发展的历史过程，简要地总结归纳了钻井科技发展的历史经验和教训，并对油气钻井技术发展的现状、趋势及国内外差距进行了认真分析。在此基础上，针对我国陆上油气勘探与开发对钻井技术的主要需求，探讨了我国今后油气钻井技术发展的思路和目标，并简要论述了钻井关键技术的研究与开发重点。

阐明了石油钻井工程的学科特点，指明了石油钻井的发展趋势与内在动力，并对21世纪石油钻井技术进行了展望，论述了高温高压钻井、深井超深井钻井、特殊工艺钻井及三维可控与可视化钻井等技术系列的重要意义。

Casing failure is a worldwide problem in oil industry and severely impacts the economic benefits. The typical forms of the casing failure includes casing corrosion, radial deformation and shear etc., and the causes include corrosion of the formation water, non-uniform load on the casing initiated by the formation deformation or the hydration of the shale, shear initiated by formation sliding. As to the casing failure induced by the reservoir compaction, the reasons and the mechanisms of the reservoir compaction were studied ; furthermore, the mechanisms of the casing failure in the compaction reservoir were analyzed and presented in detail. Measures for controlling casing failure in the compaction reservoir are put forward, which include increase the level of the casing design and determine suitable casing program; inject water to maintain the formation pressure, use the non-API thick wall

对石油钻井中井眼轨迹控制问题进行了力学分析，给出了底部钻具组合三维受力和变形的控制方程，建立了钻头与正交各向异性地层相互作用模型，阐明了井眼轨迹预测和控制计算方法。